University life is one of the most memorable experiences in an undergraduates' whole life. It is in the university that an undergraduate experience the vibrant environment, company of friends, and various academic and co-curricular activities, which enriches knowledge, and prepares undergraduates for their adulthood. However, up to date empirical evidence evident that, a considerable number of undergraduates currently studying in universities in various countries suffer from a greater degree of stress. Hence, this book was initiated with the prime purpose of identifying significant determinants of stress undergraduates; with special reference to Sri Lanka. This book systematically explores (building on the findings of a social research) the determinants of stress of university undergraduates. It is hoped that this book will assist undergraduates to deal with stress and help them to advance their knowledge and the skill on coping strategies as well.